They bury it in there pretty deep, are you asking how to get to the entry point, or are you there and its not working for you?

Fed Sch A, QZ button above Line 16, then hit the button on Line 1, 2106,  then hit that button on Line B then scroll down to Line 14.

Its been years and years since Ive needed to use this, so Im not sure how it works, but I think thats your entry point.